<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .hide{
            display: none;
        }
        .menu{
            height: 38px;
            background-color: #eeeeee;
            line-height: 38px;
        }
        .active{
            background-color: brown;
        }
        .menu .menu-item{
            float: left;
            border-right: 1px solid red;
            padding: 0 5px;
            cursor: pointer;
        }
        .content{
            min-height: 100px;
            border: 1px solid #eeeeee;
        }
    </style>
</head>
<body>

    <div style="width: 700px;margin:0 auto">

        <div class="menu">
            <div  class="menu-item active" >菜单一</div>
            <div  class="menu-item" >菜单二</div>
            <div  class="menu-item" >菜单三</div>
        </div>
        <div class="content">
            <div >内容一</div>
            <div class="hide" >内容二</div>
            <div class="hide">内容三</div>

        </div>

    </div>
    <script src="../import/jquery-1.12.4.js"></script>
    <script>
        $('.menu-item').click(function(){
            $(this).addClass('active').siblings().removeClass('active');
            $('.content').children().eq($(this).index()).removeClass('hide').siblings().addClass('hide');

        });
    </script>
</body>
</html>